src/player.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 /*
  21 (c) 2010 Perttu Ahola <celeron55@gmail.com>
  22 */
  23
  24 #include "player.h"
  25 #include "map.h"
  26 #include "connection.h"
  27 #include "constants.h"
  28 #include "utility.h"
  29
  30 Player::Player():
  31         touching_ground(false),
  32         in_water(false),
  33         in_water_stable(false),
  34         swimming_up(false),
  35         craftresult_is_preview(true),
  36         peer_id(PEER_ID_INEXISTENT),
  37         m_pitch(0),
  38         m_yaw(0),
  39         m_speed(0,0,0),
  40         m_position(0,0,0)
  41 {
  42         updateName("<not set>");
  43         resetInventory();
  44 }
  45
  46 Player::~Player()
  47 {
  48 }
  49
  50 void Player::resetInventory()
  51 {
  52         inventory.clear();
  53         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  54         inventory.addList("craft", 9);
  55         inventory.addList("craftresult", 1);
  56 }
  57
  58 // Y direction is ignored
  59 void Player::accelerate(v3f target_speed, f32 max_increase)
  60 {
  61         v3f d_wanted = target_speed - m_speed;
  62         d_wanted.Y = 0;
  63         f32 dl_wanted = d_wanted.getLength();
  64         f32 dl = dl_wanted;
  65         if(dl > max_increase)
  66                 dl = max_increase;
  67
  68         v3f d = d_wanted.normalize() * dl;
  69
  70         m_speed.X += d.X;
  71         m_speed.Z += d.Z;
  72         //m_speed += d;
  73
  74 #if 0 // old code
  75         if(m_speed.X < target_speed.X - max_increase)
  76                 m_speed.X += max_increase;
  77         else if(m_speed.X > target_speed.X + max_increase)
  78                 m_speed.X -= max_increase;
  79         else if(m_speed.X < target_speed.X)
  80                 m_speed.X = target_speed.X;
  81         else if(m_speed.X > target_speed.X)
  82                 m_speed.X = target_speed.X;
  83
  84         if(m_speed.Z < target_speed.Z - max_increase)
  85                 m_speed.Z += max_increase;
  86         else if(m_speed.Z > target_speed.Z + max_increase)
  87                 m_speed.Z -= max_increase;
  88         else if(m_speed.Z < target_speed.Z)
  89                 m_speed.Z = target_speed.Z;
  90         else if(m_speed.Z > target_speed.Z)
  91                 m_speed.Z = target_speed.Z;
  92 #endif
  93 }
  94
  95 void Player::serialize(std::ostream &os)
  96 {
  97         // Utilize a Settings object for storing values
  98         Settings args;
  99         args.setS32("version", 1);
 100         args.set("name", m_name);
 101         args.setFloat("pitch", m_pitch);
 102         args.setFloat("yaw", m_yaw);
 103         args.setV3F("position", m_position);
 104         args.setBool("craftresult_is_preview", craftresult_is_preview);
 105
 106         args.writeLines(os);
 107
 108         os<<"PlayerArgsEnd\n";
 109
 110         inventory.serialize(os);
 111 }
 112
 113 void Player::deSerialize(std::istream &is)
 114 {
 115         Settings args;
 116
 117         for(;;)
 118         {
 119                 if(is.eof())
 120                         throw SerializationError
 121                                         ("Player::deSerialize(): PlayerArgsEnd not found");
 122                 std::string line;
 123                 std::getline(is, line);
 124                 std::string trimmedline = trim(line);
 125                 if(trimmedline == "PlayerArgsEnd")
 126                         break;
 127                 args.parseConfigLine(line);
 128         }
 129
 130         //args.getS32("version");
 131         std::string name = args.get("name");
 132         updateName(name.c_str());
 133         m_pitch = args.getFloat("pitch");
 134         m_yaw = args.getFloat("yaw");
 135         m_position = args.getV3F("position");
 136         try{
 137                 craftresult_is_preview = args.getBool("craftresult_is_preview");
 138         }catch(SettingNotFoundException &e){
 139                 craftresult_is_preview = true;
 140         }
 141
 142         inventory.deSerialize(is);
 143 }
 144
 145 /*
 146         RemotePlayer
 147 */
 148
 149 #ifndef SERVER
 150
 151 RemotePlayer::RemotePlayer(
 152                 scene::ISceneNode* parent,
 153                 IrrlichtDevice *device,
 154                 s32 id):
 155         scene::ISceneNode(parent, (device==NULL)?NULL:device->getSceneManager(), id),
 156         m_text(NULL)
 157 {
 158         m_box = core::aabbox3d<f32>(-BS/2,0,-BS/2,BS/2,BS*2,BS/2);
 159
 160         if(parent != NULL && device != NULL)
 161         {
 162                 // ISceneNode stores a member called SceneManager
 163                 scene::ISceneManager* mgr = SceneManager;
 164                 video::IVideoDriver* driver = mgr->getVideoDriver();
 165                 gui::IGUIEnvironment* gui = device->getGUIEnvironment();
 166
 167                 // Add a text node for showing the name
 168                 wchar_t wname[1] = {0};
 169                 m_text = mgr->addTextSceneNode(gui->getBuiltInFont(),
 170                                 wname, video::SColor(255,255,255,255), this);
 171                 m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
 172
 173                 // Attach a simple mesh to the player for showing an image
 174                 scene::SMesh *mesh = new scene::SMesh();
 175                 { // Front
 176                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 177                 video::SColor c(255,255,255,255);
 178                 video::S3DVertex vertices[4] =
 179                 {
 180                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 181                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 182                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 183                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 184                 };
 185                 u16 indices[] = {0,1,2,2,3,0};
 186                 buf->append(vertices, 4, indices, 6);
 187                 // Set material
 188                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 189                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 190                 buf->getMaterial().setTexture(0, driver->getTexture(porting::getDataPath("player.png").c_str()));
 191                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 192                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 193                 //buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 194                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 195                 // Add to mesh
 196                 mesh->addMeshBuffer(buf);
 197                 buf->drop();
 198                 }
 199                 { // Back
 200                 scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 201                 video::SColor c(255,255,255,255);
 202                 video::S3DVertex vertices[4] =
 203                 {
 204                         video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
 205                         video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
 206                         video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
 207                         video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
 208                 };
 209                 u16 indices[] = {0,1,2,2,3,0};
 210                 buf->append(vertices, 4, indices, 6);
 211                 // Set material
 212                 buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 213                 //buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 214                 buf->getMaterial().setTexture(0, driver->getTexture(porting::getDataPath("player_back.png").c_str()));
 215                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 216                 buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 217                 buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 218                 // Add to mesh
 219                 mesh->addMeshBuffer(buf);
 220                 buf->drop();
 221                 }
 222                 m_node = mgr->addMeshSceneNode(mesh, this);
 223                 mesh->drop();
 224                 m_node->setPosition(v3f(0,0,0));
 225         }
 226 }
 227
 228 RemotePlayer::~RemotePlayer()
 229 {
 230         if(SceneManager != NULL)
 231                 ISceneNode::remove();
 232 }
 233
 234 void RemotePlayer::updateName(const char *name)
 235 {
 236         Player::updateName(name);
 237         if(m_text != NULL)
 238         {
 239                 wchar_t wname[PLAYERNAME_SIZE];
 240                 mbstowcs(wname, m_name, strlen(m_name)+1);
 241                 m_text->setText(wname);
 242         }
 243 }
 244
 245 void RemotePlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 246 {
 247         m_pos_animation_time_counter += dtime;
 248         m_pos_animation_counter += dtime;
 249         v3f movevector = m_position - m_oldpos;
 250         f32 moveratio;
 251         if(m_pos_animation_time < 0.001)
 252                 moveratio = 1.0;
 253         else
 254                 moveratio = m_pos_animation_counter / m_pos_animation_time;
 255         if(moveratio > 1.5)
 256                 moveratio = 1.5;
 257         m_showpos = m_oldpos + movevector * moveratio;
 258
 259         ISceneNode::setPosition(m_showpos);
 260 }
 261
 262 #endif
 263
 264 #ifndef SERVER
 265 /*
 266         LocalPlayer
 267 */
 268
 269 LocalPlayer::LocalPlayer():
 270         m_sneak_node(32767,32767,32767),
 271         m_sneak_node_exists(false)
 272 {
 273 }
 274
 275 LocalPlayer::~LocalPlayer()
 276 {
 277 }
 278
 279 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
 280 {
 281         v3f position = getPosition();
 282         v3f oldpos = position;
 283         v3s16 oldpos_i = floatToInt(oldpos, BS);
 284
 285         /*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 286                         <<oldpos_i.Z<<")"<<std::endl;*/
 287
 288         /*
 289                 Calculate new position
 290         */
 291         position += m_speed * dtime;
 292
 293         // Skip collision detection if a special movement mode is used
 294         bool free_move = g_settings.getBool("free_move");
 295         if(free_move)
 296         {
 297                 setPosition(position);
 298                 return;
 299         }
 300
 301         /*
 302                 Collision detection
 303         */
 304
 305         // Player position in nodes
 306         v3s16 pos_i = floatToInt(position, BS);
 307
 308         /*
 309                 Check if player is in water (the oscillating value)
 310         */
 311         try{
 312                 // If in water, the threshold of coming out is at higher y
 313                 if(in_water)
 314                 {
 315                         v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
 316                         in_water = content_liquid(map.getNode(pp).d);
 317                 }
 318                 // If not in water, the threshold of going in is at lower y
 319                 else
 320                 {
 321                         v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
 322                         in_water = content_liquid(map.getNode(pp).d);
 323                 }
 324         }
 325         catch(InvalidPositionException &e)
 326         {
 327                 in_water = false;
 328         }
 329
 330         /*
 331                 Check if player is in water (the stable value)
 332         */
 333         try{
 334                 v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
 335                 in_water_stable = content_liquid(map.getNode(pp).d);
 336         }
 337         catch(InvalidPositionException &e)
 338         {
 339                 in_water_stable = false;
 340         }
 341
 342         /*
 343                 Collision uncertainty radius
 344                 Make it a bit larger than the maximum distance of movement
 345         */
 346         //f32 d = pos_max_d * 1.1;
 347         // A fairly large value in here makes moving smoother
 348         f32 d = 0.15*BS;
 349
 350         // This should always apply, otherwise there are glitches
 351         assert(d > pos_max_d);
 352
 353         float player_radius = BS*0.35;
 354         float player_height = BS*1.7;
 355
 356         // Maximum distance over border for sneaking
 357         f32 sneak_max = BS*0.4;
 358
 359         /*
 360                 If sneaking, player has larger collision radius to keep from
 361                 falling
 362         */
 363         /*if(control.sneak)
 364                 player_radius = sneak_max + d*1.1;*/
 365
 366         /*
 367                 If sneaking, keep in range from the last walked node and don't
 368                 fall off from it
 369         */
 370         if(control.sneak && m_sneak_node_exists)
 371         {
 372                 f32 maxd = 0.5*BS + sneak_max;
 373                 v3f lwn_f = intToFloat(m_sneak_node, BS);
 374                 position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
 375                 position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
 376
 377                 f32 min_y = lwn_f.Y + 0.5*BS;
 378                 if(position.Y < min_y)
 379                 {
 380                         position.Y = min_y;
 381                         if(m_speed.Y < 0)
 382                                 m_speed.Y = 0;
 383                 }
 384         }
 385
 386         /*
 387                 Calculate player collision box (new and old)
 388         */
 389         core::aabbox3d<f32> playerbox(
 390                 position.X - player_radius,
 391                 position.Y - 0.0,
 392                 position.Z - player_radius,
 393                 position.X + player_radius,
 394                 position.Y + player_height,
 395                 position.Z + player_radius
 396         );
 397         core::aabbox3d<f32> playerbox_old(
 398                 oldpos.X - player_radius,
 399                 oldpos.Y - 0.0,
 400                 oldpos.Z - player_radius,
 401                 oldpos.X + player_radius,
 402                 oldpos.Y + player_height,
 403                 oldpos.Z + player_radius
 404         );
 405
 406         /*
 407                 If the player's feet touch the topside of any node, this is
 408                 set to true.
 409
 410                 Player is allowed to jump when this is true.
 411         */
 412         touching_ground = false;
 413
 414         /*std::cout<<"Checking collisions for ("
 415                         <<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
 416                         <<") -> ("
 417                         <<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
 418                         <<"):"<<std::endl;*/
 419
 420         /*
 421                 Go through every node around the player
 422         */
 423         for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
 424         for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
 425         for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 426         {
 427                 try{
 428                         // Player collides into walkable nodes
 429                         if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false)
 430                                 continue;
 431                 }
 432                 catch(InvalidPositionException &e)
 433                 {
 434                         // Doing nothing here will block the player from
 435                         // walking over map borders
 436                 }
 437
 438                 core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
 439
 440                 /*
 441                         See if the player is touching ground.
 442
 443                         Player touches ground if player's minimum Y is near node's
 444                         maximum Y and player's X-Z-area overlaps with the node's
 445                         X-Z-area.
 446
 447                         Use 0.15*BS so that it is easier to get on a node.
 448                 */
 449                 if(
 450                                 //fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
 451                                 fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
 452                                 && nodebox.MaxEdge.X-d > playerbox.MinEdge.X
 453                                 && nodebox.MinEdge.X+d < playerbox.MaxEdge.X
 454                                 && nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
 455                                 && nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
 456                 ){
 457                         touching_ground = true;
 458                 }
 459
 460                 // If player doesn't intersect with node, ignore node.
 461                 if(playerbox.intersectsWithBox(nodebox) == false)
 462                         continue;
 463
 464                 /*
 465                         Go through every axis
 466                 */
 467                 v3f dirs[3] = {
 468                         v3f(0,0,1), // back-front
 469                         v3f(0,1,0), // top-bottom
 470                         v3f(1,0,0), // right-left
 471                 };
 472                 for(u16 i=0; i<3; i++)
 473                 {
 474                         /*
 475                                 Calculate values along the axis
 476                         */
 477                         f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
 478                         f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
 479                         f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
 480                         f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
 481                         f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
 482                         f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
 483
 484                         /*
 485                                 Check collision for the axis.
 486                                 Collision happens when player is going through a surface.
 487                         */
 488                         /*f32 neg_d = d;
 489                         f32 pos_d = d;
 490                         // Make it easier to get on top of a node
 491                         if(i == 1)
 492                                 neg_d = 0.15*BS;
 493                         bool negative_axis_collides =
 494                                 (nodemax > playermin && nodemax <= playermin_old + neg_d
 495                                         && m_speed.dotProduct(dirs[i]) < 0);
 496                         bool positive_axis_collides =
 497                                 (nodemin < playermax && nodemin >= playermax_old - pos_d
 498                                         && m_speed.dotProduct(dirs[i]) > 0);*/
 499                         bool negative_axis_collides =
 500                                 (nodemax > playermin && nodemax <= playermin_old + d
 501                                         && m_speed.dotProduct(dirs[i]) < 0);
 502                         bool positive_axis_collides =
 503                                 (nodemin < playermax && nodemin >= playermax_old - d
 504                                         && m_speed.dotProduct(dirs[i]) > 0);
 505                         bool main_axis_collides =
 506                                         negative_axis_collides || positive_axis_collides;
 507
 508                         /*
 509                                 Check overlap of player and node in other axes
 510                         */
 511                         bool other_axes_overlap = true;
 512                         for(u16 j=0; j<3; j++)
 513                         {
 514                                 if(j == i)
 515                                         continue;
 516                                 f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
 517                                 f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
 518                                 f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
 519                                 f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
 520                                 if(!(nodemax - d > playermin && nodemin + d < playermax))
 521                                 {
 522                                         other_axes_overlap = false;
 523                                         break;
 524                                 }
 525                         }
 526
 527                         /*
 528                                 If this is a collision, revert the position in the main
 529                                 direction.
 530                         */
 531                         if(other_axes_overlap && main_axis_collides)
 532                         {
 533                                 m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 534                                 position -= position.dotProduct(dirs[i]) * dirs[i];
 535                                 position += oldpos.dotProduct(dirs[i]) * dirs[i];
 536                         }
 537
 538                 }
 539         } // xyz
 540
 541         /*
 542                 Check the nodes under the player to see from which node the
 543                 player is sneaking from, if any.
 544         */
 545         {
 546                 v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
 547                 v2f player_p2df(position.X, position.Z);
 548                 f32 min_distance_f = 100000.0*BS;
 549                 // If already seeking from some node, compare to it.
 550                 /*if(m_sneak_node_exists)
 551                 {
 552                         v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
 553                         v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
 554                         f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
 555                         f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
 556                         // Ignore if player is not on the same level (likely dropped)
 557                         if(d_vert_f < 0.15*BS)
 558                                 min_distance_f = d_horiz_f;
 559                 }*/
 560                 v3s16 new_sneak_node = m_sneak_node;
 561                 for(s16 x=-1; x<=1; x++)
 562                 for(s16 z=-1; z<=1; z++)
 563                 {
 564                         v3s16 p = pos_i_bottom + v3s16(x,0,z);
 565                         v3f pf = intToFloat(p, BS);
 566                         v2f node_p2df(pf.X, pf.Z);
 567                         f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
 568                         f32 max_axis_distance_f = MYMAX(
 569                                         fabs(player_p2df.X-node_p2df.X),
 570                                         fabs(player_p2df.Y-node_p2df.Y));
 571
 572                         if(distance_f > min_distance_f ||
 573                                         max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
 574                                 continue;
 575
 576                         try{
 577                                 // The node to be sneaked on has to be walkable
 578                                 if(content_walkable(map.getNode(p).d) == false)
 579                                         continue;
 580                                 // And the node above it has to be nonwalkable
 581                                 if(content_walkable(map.getNode(p+v3s16(0,1,0)).d) == true)
 582                                         continue;
 583                         }
 584                         catch(InvalidPositionException &e)
 585                         {
 586                                 continue;
 587                         }
 588
 589                         min_distance_f = distance_f;
 590                         new_sneak_node = p;
 591                 }
 592
 593                 bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
 594
 595                 if(control.sneak && m_sneak_node_exists)
 596                 {
 597                         if(sneak_node_found)
 598                                 m_sneak_node = new_sneak_node;
 599                 }
 600                 else
 601                 {
 602                         m_sneak_node = new_sneak_node;
 603                         m_sneak_node_exists = sneak_node_found;
 604                 }
 605
 606                 /*
 607                         If sneaking, the player's collision box can be in air, so
 608                         this has to be set explicitly
 609                 */
 610                 if(sneak_node_found && control.sneak)
 611                         touching_ground = true;
 612         }
 613
 614         /*
 615                 Set new position
 616         */
 617         setPosition(position);
 618 }
 619
 620 void LocalPlayer::applyControl(float dtime)
 621 {
 622         // Clear stuff
 623         swimming_up = false;
 624
 625         // Random constants
 626         f32 walk_acceleration = 4.0 * BS;
 627         f32 walkspeed_max = 4.0 * BS;
 628
 629         setPitch(control.pitch);
 630         setYaw(control.yaw);
 631
 632         v3f move_direction = v3f(0,0,1);
 633         move_direction.rotateXZBy(getYaw());
 634
 635         v3f speed = v3f(0,0,0);
 636
 637         bool free_move = g_settings.getBool("free_move");
 638         bool fast_move = g_settings.getBool("fast_move");
 639         bool continuous_forward = g_settings.getBool("continuous_forward");
 640
 641         if(free_move)
 642         {
 643                 v3f speed = getSpeed();
 644                 speed.Y = 0;
 645                 setSpeed(speed);
 646         }
 647
 648         // Whether superspeed mode is used or not
 649         bool superspeed = false;
 650
 651         // If free movement and fast movement, always move fast
 652         if(free_move && fast_move)
 653                 superspeed = true;
 654
 655         // Auxiliary button 1 (E)
 656         if(control.aux1)
 657         {
 658                 if(free_move)
 659                 {
 660                         // In free movement mode, aux1 descends
 661                         v3f speed = getSpeed();
 662                         if(fast_move)
 663                                 speed.Y = -20*BS;
 664                         else
 665                                 speed.Y = -walkspeed_max;
 666                         setSpeed(speed);
 667                 }
 668                 else
 669                 {
 670                         // If not free movement but fast is allowed, aux1 is
 671                         // "Turbo button"
 672                         if(fast_move)
 673                                 superspeed = true;
 674                 }
 675         }
 676
 677         if(continuous_forward)
 678                 speed += move_direction;
 679
 680         if(control.up)
 681         {
 682                 if(continuous_forward)
 683                         superspeed = true;
 684                 else
 685                         speed += move_direction;
 686         }
 687         if(control.down)
 688         {
 689                 speed -= move_direction;
 690         }
 691         if(control.left)
 692         {
 693                 speed += move_direction.crossProduct(v3f(0,1,0));
 694         }
 695         if(control.right)
 696         {
 697                 speed += move_direction.crossProduct(v3f(0,-1,0));
 698         }
 699         if(control.jump)
 700         {
 701                 if(free_move)
 702                 {
 703                         v3f speed = getSpeed();
 704                         if(fast_move)
 705                                 speed.Y = 20*BS;
 706                         else
 707                                 speed.Y = walkspeed_max;
 708                         setSpeed(speed);
 709                 }
 710                 else if(touching_ground)
 711                 {
 712                         v3f speed = getSpeed();
 713                         /*
 714                                 NOTE: The d value in move() affects jump height by
 715                                 raising the height at which the jump speed is kept
 716                                 at its starting value
 717                         */
 718                         speed.Y = 6.5*BS;
 719                         setSpeed(speed);
 720                 }
 721                 // Use the oscillating value for getting out of water
 722                 // (so that the player doesn't fly on the surface)
 723                 else if(in_water)
 724                 {
 725                         v3f speed = getSpeed();
 726                         speed.Y = 1.5*BS;
 727                         setSpeed(speed);
 728                         swimming_up = true;
 729                 }
 730         }
 731
 732         // The speed of the player (Y is ignored)
 733         if(superspeed)
 734                 speed = speed.normalize() * walkspeed_max * 5.0;
 735         else if(control.sneak)
 736                 speed = speed.normalize() * walkspeed_max / 3.0;
 737         else
 738                 speed = speed.normalize() * walkspeed_max;
 739
 740         f32 inc = walk_acceleration * BS * dtime;
 741
 742         // Faster acceleration if fast and free movement
 743         if(free_move && fast_move)
 744                 inc = walk_acceleration * BS * dtime * 10;
 745
 746         // Accelerate to target speed with maximum increment
 747         accelerate(speed, inc);
 748 }
 749 #endif
 750